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Aerial view of Hoover Dam, Black Canyon, and the Colordo River during the construction of the dam. Two portals of the diversion tunnels are visible. There are trucks and buildings on the cofferdam. The face of the...

Aerial view of Hoover Dam showing downstream face, intake towers, and spillways. Water is being released from the outlet works below the dam and one of the power houses is visible. Many cars are parked on the roads...